CN104350560A - Electrical transfer switch system - Google Patents
Electrical transfer switch system Download PDFInfo
- Publication number
- CN104350560A CN104350560A CN201380002848.1A CN201380002848A CN104350560A CN 104350560 A CN104350560 A CN 104350560A CN 201380002848 A CN201380002848 A CN 201380002848A CN 104350560 A CN104350560 A CN 104350560A
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- China
- Prior art keywords
- electrical contact
- contact
- axle
- arc chute
- supporting
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
- H01H9/362—Mounting of plates in arc chamber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
- H01H2009/365—Metal parts using U-shaped plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2205/00—Movable contacts
- H01H2205/002—Movable contacts fixed to operating part
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/008—Actuators other then push button
- H01H2221/01—Actuators other then push button also rotatable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2231/00—Applications
- H01H2231/052—Selectors, e.g. dimmers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/018—Application transfer; between utility and emergency power supply
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A system includes an automatic transfer switch configured to selectively route power from a first power source or a second power source to a load. The automatic transfer switch comprises a switch configured to be moved between a first position and a second position, a first set of electrical contacts configured to route the power from the first power source when the switch is in the first position, a second set of electrical contacts configured to route the power from the second power source when the switch is in the second position, and a first arc chute housing configured to substantially enclose the first set of electrical contacts when the switch is in the first position.
Description
Technical field
Theme disclosed herein relates to electrical system, and relates more specifically to electric switch.
Background technology
Electrical system can comprise various electric member, and such as circuit-breaker and change over switch, power supply is connected in load by it.Such as, change over switch optionally can connect loads on the first power supply or second source according to the availability of the operating condition of each power supply.When automatic change-over, when the first power supply becomes unavailable, change over switch can automatically from the first electrical source exchange to second source.Switching between the power supplies can benefit from efficiency and other advantage of improvement.
Summary of the invention
Described embodiment is expected only exemplary, and the embodiment stated below can being similar to or being different from.
In one embodiment, a kind of system comprises automatic change-over, it is configured to optionally send power to load from the first power supply or second source, and this automatic change-over comprises and can move between the first position and the second position and be configured to switch, the first holding electrical contact and the first contact bearing assembly that axle is rotated.First contact bearing assembly comprises the first contact supporting, first pin and first connecting rod, first contact supporting is connected on the first movable electrical contact, wherein the first movable electrical contact is configured to be connected to when the switch is in a first position on the first holding electrical contact, thus power is sent to load from the first power supply, first pin extends through the hole of the first contact supporting, first connecting rod is connected on axle and the first pin, and be configured to make the first contact supporting be rotated around the rotation parallel with axle, thus optionally the first movable electrical contact connected with the first holding electrical contact or disconnect.
In a second embodiment, a kind of system comprises automatic change-over, it is configured to optionally be sent to load by power from the first power supply or second source, this automatic change-over comprises the switch being configured to movement between the first position and the second position, first group of electrical contact, second group of electrical contact and the first arc chute shell, first group of electrical contact is configured to when the switch is in a first position from the first power supply delivering power, second group of electrical contact is configured to delivering power from second source when the switch is in a second position, and the first arc chute Shell structure is roughly close first group of electrical contact when the switch is in a first position.
In the third embodiment, a kind of system comprises automatic change-over, it is configured to optionally be sent to load by power from the first power supply or second source, this automatic change-over comprises the switch being configured to the first axle and the second axle are rotated between corresponding primary importance and the second place, be configured to be coupled to each other together when the first axle is in primary importance and from the first power supply the first holding electrical contact of delivering power and the first movable electrical contact, be configured to be coupled to each other together when the second axle is in the second place and from second source the second holding electrical contact of delivering power and the second movable electrical contact, and the first contact bearing assembly.First contact bearing assembly comprises the first contact supporting be connected on the first movable electrical contact, through the first pin that the hole of the first contact supporting extends, and first connecting rod, first axle and the first pin connect by it, and be configured to make the first contact supporting be rotated around the first rotation parallel with the first axle, thus optionally the first movable electrical contact connected with the first holding electrical contact or disconnect.
Accompanying drawing explanation
When describing in detail below reading with reference to accompanying drawing, will understand these and further feature, aspect and the advantage of the present embodiment better, wherein similar in all of the figs label represents similar parts, wherein:
Fig. 1 is the perspective view of the embodiment of electric switching, and it is configured to from the first power supply or second source towards load delivering power;
Fig. 2 is the perspective view of the embodiment of the contact bearing assembly of the electric switching of Fig. 1, and which show contact supporting, it is configured to abut arc chute shell, thus improves the operability of electric switching;
Fig. 3 is the perspective view of the embodiment of the contact supporting of Fig. 2, which show multiple feature of the operability for improving electric switching;
Fig. 4 is the mount pin of contact bearing assembly of Fig. 2 and the perspective view of the embodiment of connecting rod;
Fig. 5 is the end view of another embodiment of connecting rod plug-in unit.
Fig. 6 is the perspective view of the embodiment of the arc chute shell of Fig. 2, which show multiple blade of the arc extinction performance for improving electric switching; And
Fig. 7 is the perspective view of the embodiment of the arc chute shell blade of Fig. 5.
Embodiment
In order to be devoted to the simple and clear description providing these embodiments, all features of actual enforcement can not described in the description completely.Should be appreciated that, in the exploitation that any this reality is implemented, as in any engineering or design object, the decision-making of many specially for carrying out must be made, to realize the specific purpose of developer, such as, meet the constraint that system is correlated with and business is relevant, it can change according to enforcement difference.In addition, should understand that this development may be complicated and consuming time, but remain for benefiting from those of ordinary skill of the present disclosure the routine matter that it bears design, structure and manufacture.
When introducing the element of various embodiment, article " ", " one ", " being somebody's turn to do " and " described " are all intended to expression and there is one or more element.Word " comprises ", " comprising " and " having " is all intended to comprising property and mean except listed element, also can there is other element.
The disclosure is devoted at least to improve the efficiency of electric switching (such as automatic change-over (ATS)) and the system of operability.Such as, when movable electrical contact is connected to holding electrical contact, between power supply and load (such as, motor or another power consumer), just define complete circuit.Holding electrical contact is connected on the base of ATS, and movable electrical contact connects on the rotary shaft.Movable electrical contact optionally connects with holding electrical contact or disconnects by the rotation of axle, thus forms (such as connecting) or disconnect (such as interrupting) circuit between power supply and load.In some described below embodiment, movable electrical contact can be closed or be sealed in shell (such as arc chute shell), to improve the arc extinction performance of ATS.As a result, the operation of ATS can be more effective and reliable.
Forward accompanying drawing to now, Fig. 1 shows the perspective view of an embodiment of change over switch (such as ATS 10), and it has for improving the feature forming and disconnect the electrical connection efficiency in ATS 10.Power transmits from the first power supply 12 or second source 14 towards load 16 by ATS 10.Such as, the first power supply 12 may be electrical network, and second source 14 may be stand-by generator.Load 16 may be any downstream power user, such as pump, motor, turbine, refrigerating system, combustion gas turbine systems, healthcare system and/or other.
ATS 10 comprises one or more holding electrical contact 18 (such as electrical contact refers to), and it connects or is fixed on the base 20 of ATS 10.Each holding electrical contact 18 has corresponding movable electrical contact 22 (such as electrical contact refers to).When movable electrical contact 22 and holding electrical contact 18 are linked together, just define complete circuit, thus power can be made to flow to load 16 from the first power supply 12 or second source 14.Such as, as hereinafter discuss, ATS 10 comprises first group of holding electrical contact 18 and movable electrical contact 22, and power is sent to load 16 from the first power supply 12 when being linked together by it.Alternatively, ATS 10 comprises second group of holding electrical contact 18 and movable electrical contact 22, and power is sent to load 16 from second source 12 when being linked together by it.In addition, ATS 10 is so constructed, and makes at any given time, only has one group of holding electrical contact 18 and movable electrical contact 22 to be linked together.In this way, one only in the first power supply 12 or second source 14 and form complete circuit between load 16.As used in this article, term " movable " means with to be fixed on original position contrary, can move (such as by the rotation of axle or actuating of switch) relative to the base 20 of ATS 10.That is, movable electrical contact 22 can be moved by actuating of switch 24, and holding electrical contact 18 usually relative to ATS 10 base 20 and be fixed on original position.
First group of holding electrical contact 26 and movable electrical contact 28 are associated with the first power supply 12, and second group of holding electrical contact 30 and movable electrical contact 32 are associated with second source 14.When first group of holding electrical contact 26 and movable electrical contact 28 are linked together, ATS 10 just defines complete circuit between the first power supply 12 and load 16.Similarly, when second group of holding electrical contact 30 and movable electrical contact 32 are linked together, ATS just defines complete circuit between second source 14 and load 16.Switch 24 can move between primary importance 34 and the second place 36, to be linked together by first group of contact 26 and 28 respectively, or is linked together by second group of contact 30 and 32.In other words, when switch 24 is in primary importance 34, first group of contact 26 is together with 28 are coupled to each other, and the first power supply 12 drives load 16.In addition, when switch 24 is in primary importance 34, second group of contact 30 and 32 disconnects each other.Therefore, be prevented from from the power transimission of second source 14 to load 16.Similarly, when switch 24 is in the second place 36, second group of contact 30 is together with 32 are coupled to each other, and second source 12 drives load 16.In addition, when switch 24 is in the second place 36, first group of contact 26 and 28 disconnects each other.Therefore, be prevented from from the power transimission of the first power supply 12 to load 16.
As shown in the figure, first group of contact 26 and 28 comprises four holding electrical contacts 18 and four movable electrical contacts 22.Similarly, second group of contact 30 and 32 comprises four holding electrical contacts 18 and four movable electrical contacts 22.In some configurations, first group and second group of electrical contact 26,28,30 and 32 can comprise holding electrical contact 18 and the movable electrical contact 22 of identical or different quantity.Therefore, ATS 10 can comprise holding electrical contact 18 or the movable electrical contact 22 of any suitable quantity, such as 1,2,3,4,5,6 or more.
Movable electrical contact 22 is connected on the first axle 38 and the second axle 40 by contact bearing assembly 42.More particularly, first group of movable contact 28 is connected on the first axle 38, and second group of movable contact 32 is connected on the second axle 40.Actuating or moving of switch 24 makes the first axle 38 and the second axle 40 rotate, thus the position of adjustment contact bearing assembly 42 and movable electrical contact 22.Such as, as shown in the best in fig. 2, the rotation of the first axle 38 makes first group of movable electrical contact 28 rotate around the rotation 29 parallel with the first axle 38, and the rotation of the second axle 40 makes second group of movable electrical contact 32 rotate around the second rotation 31 parallel with the second axle 40.Significantly, actuating of switch 24 makes axle 38 and 40 rotate simultaneously, and in certain embodiments, rotates toward each other according to certain predetermined ratio.Such as, the first axle 38 can rotate according to about 2:1,1:1,1:2 or other suitable ratio any relative to the second axle 40.Due to motion, as described above, when first group of holding electrical contact 26 and movable electrical contact 28 are linked together, second group of holding electrical contact 30 and movable electrical contact 32 disconnect, and vice versa simultaneously.This can make in any given time, and one only in the first power supply 12 or second source 14 is electrically connected in load 16.But, it should be noted, in some configurations, can need to make power supply 12 and 14 and load 16 keep being electrically connected the lasting of short duration time (such as, close change over switch or carried out before disconnecting change over switch).In addition, in certain embodiments, ATS 10 can comprise the axle 38 and 40 (such as 1,2,3,4,5,6 or more an axle) of varying number, thus movable electrical contact 22 is rotated.
The structure of contact bearing assembly 42 will be described in more detail below.See figures.1.and.2, movable electrical contact 22 is connected on the bottom wall portion 44 of supporting structure (such as contact supporting 46).Contact supporting 46 comprises notch (such as rectangular notch) 54, and it is positioned on the end face 56 of contact supporting 46.Connecting rod 52 is arranged in each notch 54, and is configured in axle 38 and 40 to be mechanically connected on each movable electrical contact 22.More particularly, connecting rod 52 is connected in axle 38 or 40 by pitman arm 58, and is connected to by pin 60 (such as mount pin) in contact supporting 46, and pin is at least partially disposed in notch 54.Pitman arm 58 and pin 60 make axle 38 with 40 converting rotary motion become contact to support 46 and the rotary motion of movable electrical contact 22.
Be positioned at above movable electrical contact 22 is arcuate surfaces 48 (such as protruding side surface or most external side surface).Arcuate surfaces 48 is configured to abut shell 50 (such as arc chute shell), thus is enclosed in shell 50 by movable electrical contact 22 during the operation of ATS 10.Each movable electrical contact 22 has corresponding arc chute shell 50, but in an illustrated embodiment, has eliminated some arc chute shell 50, thus shows contact bearing assembly 42 and holding electrical contact 18 and movable electrical contact 22 better.
Should be appreciated that, close one or more movable electrical contact 22 and add air pressure in arc chute shell 50, thereby reduce when holding electrical contact 18 and movable electrical contact 22 adjoin one another close or separated from one another time there is the possibility of arc discharge.Such as, when electrical contact 18 and 22 is separated from one another, because the electric current between electrical contact 18 and 22 is disconnected, so the gas (such as, arcing gas) in arc chute shell 50 is inflatable.Because arc chute shell 50 is sealed at least partly, so arc chute shell 50 can comprise the gas of expansion at least in part, thus add the pressure in arc chute shell 50, and reduce and/or extinguished arc discharge.But in some configurations, consider for space or other, a part for movable electrical contact 22 can not be closed by arc chute shell 50.More clearly illustrate the geometry of contact supporting 46 and arc chute shell 50 in fig. 2.
Fig. 2 looks along the line 2-2 of Fig. 1, for the perspective view of the contact supporting 46 of in first group of movable electrical contact 28 and the embodiment for the arc chute shell 50 of in first group of holding electrical contact 26.As above mention, together with contact supporting 46 and arc chute shell 50 are configured to abut against continuously each other during the operation of ATS 10, thus one that closes in movable electrical contact 22, and reduce the possibility of arc discharge between movable electrical contact 22 and holding electrical contact 18.More particularly, the outer surface 64 (such as recessed outer surface of outer cover) of wide arm 62 (such as arc wide arm or side arm) and arc chute shell 50 is configured as the arcuate surfaces 48 of receiving and Continuous Contact contact supporting 46 when contact supporting 46 rotates around rotation 29.That is, the shape of outer surface of outer cover 64 be by the arcuate surfaces 48 of contact supporting 46 around the rotation of rotation 29 shape described.Therefore, the shape of outer surface of outer cover 64 is normally arc, and can be such as circular, oval, parabola shaped etc.As shown in the figure, the wide arm 62 of arc chute shell 50 partly extends along the side of contact supporting 46.In this way, when holding electrical contact 18 and movable electrical contact 22 are electrically linked together each other, contact supporting 46 and arc chute shell 50 can produce the volume roughly sealed.
As shown in the illustrated embodiment, first group of holding electrical contact 26 and movable electrical contact 28 are separated from one another and keep apart.Gap 66 is defined between the base 20 of this ATS of being isolated in 10 and the contact supporting 46 of movable electrical contact 28.In other words, when first group of holding electrical contact 26 and movable electrical contact 28 disconnect each other, movable electrical contact 22 is completely not closed by arc chute shell 50.In addition, in an illustrated embodiment, second group of holding electrical contact 30 and movable electrical contact 32 are linked together.As a result, between base 20 and the contact supporting 46 for movable electrical contact 32, there is not gap 66.Therefore, movable electrical contact 32 is roughly sealed in arc chute shell 50, thus decreases the possibility of arc discharge and the electric arc limited in shell 50.In certain embodiments, arc chute shell 50 also can comprise multiple fixing inner vanes 67, which further reduces the possibility of arc discharge.As understood, when movable electrical contact 32 is closed in arc chute shell 50, the end face 56 of contact supporting 46 can be almost parallel with base 20.The feature of contact supporting 46 will be discussed in more detail with reference to Fig. 3.
Fig. 3 is the perspective view of the embodiment of the contact supporting 46 of Fig. 2.As explained before, the arcuate surfaces 48 of contact supporting 46 is configured to the outer surface 64 (such as recessed outer surface) abutting arc chute shell 50.Similarly, the sidewall 71 of contact supporting 46 is configured to the wide arm 62 abutting arc chute shell 50, thus limits the motion of movable electrical contact 22.In addition, time together with movable electrical contact 20 is coupled to each other with holding electrical contact 18, sidewall 71 and the wide arm 62 of contact supporting 46 can be further used for roughly sealing the volume in arc chute shell 50.
As above mention, contact supporting 46 comprises notch 54, and it is configured to receive connecting rod 52.Notch defines four inwalls 72,74,76 and 78.Wall 72 and 76 is respect to one another.As shown in the figure, connecting rod 52 has general U-shape 80, and it is configured to contact with relative inwall 72 and 76 (such as inner axial walls).In a similar manner, wall 74 and 78 defines corresponding sloping portion 82 and 84, and it also abuts U-shape 80.Thus, U-shape 80 is remained on original position by wall 72,74,76 and 78, and decreases the possibility of the relative motion between connecting rod 52 and contact supporting 46.In other embodiments, the shape of connecting rod 52 can be changed.Such as, connecting rod 52 may be rectangle, arc, U-shaped, polygon, or have be configured to same wall 72,74,76 and 78 adjacent other suitable shapes any.
Contact supporting 46 also can comprise multiple pad 88 (such as pad that is circular or annular), and it provides spacing between other component of adjacent contact supporting 46 or ATS 10.In certain embodiments, circular pad 88 can comprise non-conductive materials, such as felt or rubber.Pad 88 is arranged on the opposite flank 87 and 89 of contact supporting 46.In certain embodiments, the quantity of the pad 88 in each contact supporting 46 can be changed.Such as, contact supporting 46 can comprise 1,2,3,4,5,6 or more pads 88.But, it should be noted that some embodiment can not comprise any pad 88.
Hole 86 supports 46 through contact and notch 54 horizontal (such as vertically) extends relatively.In operation, pin 60 is arranged in hole 86, and connecting rod 52 is connected on pin 60.In the manner hereinafter described, to allow that contact supporting 46 (such as around axis 29) rotates together with connecting rod 52 can be coupled to each other with pin 60, also prevent the translation of pin 60 in hole 86 simultaneously.In other words, connecting rod 52 and pin 60 can be configured to the axial motion be fitted to each other with banking pin 60, and this may be reduce required for the relative motion between pin 60 and connecting rod 52 during the operation of ATS 10.As referring to Fig. 4 discuss, pin 60 can comprise groove or further feature so that axial limiting rod 52, thus improves the operability of ATS 10.Should understand, pin 60 can have similar shape usually with hole 86.As shown in the figure, hole 86 and pin 60 are all columniform, but can have other suitable shape any (such as square, polygon etc.).
Fig. 4 is the perspective view of an embodiment of connecting rod 52 and pin 60.In addition, Fig. 5 shows the end view of connecting rod plug-in unit 105, and it is positioned in connecting rod 52.As shown in Figures 4 and 5, connecting rod 52 and connecting rod plug-in unit 105 have similar side profile and/or shape.As further shown in Figure 4, pin 60 comprises groove 90 (such as circumference or ring-shaped groove), and it is approximately arranged on the axial centre place of pin 60.In other embodiments, groove 90 is positioned at other position.Such as, contact supporting 46 share public pins 60, and groove 90 along pin 60 length equidistantly or almost second countable ground spaced apart.In other words, each contact supporting 46 can have independent pin 60, or can share pin 60 between one or more contact supporting 46.
In figures 4 and 5, the end 94 at the top 107 of connecting rod 52 is circular, thus more easily matches with pitman arm 58 as shown in Figure 2; In addition, the round-shaped possibility decreasing electromagnetic interference or produce antenna-like effect.In other embodiments, top 107 has smooth shape or square configuration, to simplify manufacture.Also have curvature 109, it allows that connecting rod 52 matches with the circular surface of pin 60 or has sliding contact.Otherwise when space becomes by limited time, curvature 109 allows that connecting rod 52 more easily departs from (clear) relative motion between connecting rod 52 and arcuate surfaces 48.Also have recess (part for U-shape 80) at arbitrary end of connecting rod plug-in unit 105, wherein this recess contributes to engaging and keeping in touch.In one embodiment, connecting rod 52 is made up of the metal material of conductivity, such as aluminium, copper, magnesium, tungsten or steel.Material is preferably nonmagnetic or non-ferric, such as aluminium or copper.Because multi-form plastics, fibre reinforced materials or other synthetic material become stronger and heat-resisting, so this material also can be used for manufacturing connecting rod 52.
As shown in the illustrated embodiment, the first end 94 of connecting rod 52 has hole 96 (such as circular hole), and it is configured to receive the pitman arm 58 shown in Fig. 1 and Fig. 2.In certain embodiments, pitman arm 58 is not fixed in hole 96 relative to connecting rod 52.By this way, along with the rotation of pitman arm 58, connecting rod 52 can rotate relative to pitman arm 58.Similarly, the second end 98 of connecting rod 52 has hole 100 (such as circular hole), and it is configured to acceptance pin 60.That is, pin 60 extends through the hole 100 in the second end 98.In order to reduce the possibility of the relative motion between pin 60 and connecting rod 52 further, the connecting rod plug-in unit 105 shown in Fig. 5 can be inserted in the central space 107 formed by connecting rod 52.More particularly, when connecting rod 52 is connected on pin 60, and when connecting rod plug-in unit 105 is inserted in connecting rod 52, the adjacent part 103 (such as semicircular U-shaped adjacent part) of connecting rod plug-in unit 105 can engage with the groove 90 of pin 60.In this way, pin 60 can be stoped to move or slide and deviate from the hole 86 that contact supports 46.
Fig. 6 and Fig. 7 is the perspective view of the embodiment of arc chute shell 50, which show and is configured to same contact supporting 46 (arcuate surfaces 48 of such as contact supporting 46) adjacent wide arm 62 and outer surface 64.In an illustrated embodiment, arc chute shell 50 is assembled by two parts 106 and 108 (such as two halves).But in some configurations, arc chute shell 50 is integrally configured as single structure.These two parts 106 and 108 define relative inwall 110 and 112.Arc chute shell 50 also comprises blades installation part 114 (such as blades installation track), and it extends along relative inwall 110 and 112.As shown in the figure, blades installation part 114 is configured to receive blade 67.As shown in Figure 7, blade 67 can be M shape substantially, and the electric arc that can be formed during can contributing to being included in the operation of ATS 10 and/or make it extinguish.Such as, blade 67 can reduce the resistance of the arcing gas in arc chute shell 50, and gas more easily can be moved in blade.In an illustrated embodiment, blade 67 is asymmetrical, and comprises less gable 116 and larger gable 118.Smaller portions 116 and major part 118 are alternately placed along the height 120 of arc chute shell 50, thus increase available surface area, with the arc extinction that can be formed during making the operation of ATS 10.
The technique effect of the disclosed embodiments comprises the system for the efficiency and operability improving ATS 10.Holding electrical contact 18 is connected on the base 20 of ATS 10, and movable electrical contact 22 is connected on corresponding axle 38 or 40.Movable electrical contact 22 optionally connects with holding electrical contact 18 or disconnects by the rotation of axle 38 or 40, thus forms or open circuit between power supply 12 or 14 and load 16.Advantageously, movable electrical contact 22 can be closed or be sealed in arc chute shell 50, thus reduces the possibility of the arc discharge in ATS 10.Such as, the contact supporting supporting movable electrical contact 22 46 can have arcuate surfaces 48, and it matches with the outer surface 64 of arc chute shell 50 and wide arm 62 haply.In this way, the volume roughly sealed can be kept in arc chute shell 50, and the air pressure that can increase in arc chute shell 50, thus improve the extinguishing performance at the holding electrical contact 18 of ATS 10 and movable electrical contact 22 connects and off period is formed electric arc.Such as, when electrical contact 18 and 22 is separated from one another, because the electric current between electrical contact 18 and 22 is disconnected, so the gas (such as arcing gas) in arc chute shell 50 is inflatable.Because arc chute shell 50 is sealed at least partly, so arc chute shell 50 can comprise the gas of expansion at least in part, thus add the pressure in arc chute shell 50, and reduce and/or extinguished arc discharge.
This written description uses example to disclose various embodiment, comprises optimal mode, and those of skill in the art can be made to put into practice these embodiments, comprises and manufactures and utilize any device or system, and perform the method for any merging.The patentable scope of these embodiments is defined by the claims, and can comprise other example that those of skill in the art expect.If these other examples have the structural detail of the written language being not different from claim, if or it comprise and the equivalent structural elements of the written language of claim without essence difference, then these other examples are all within the scope of the claims.
In addition, such as the word of " top ", " bottom ", " being positioned at top " etc. is not absolute direction, because object can be rotated, overturns its side etc.Then " top " becomes " bottom " for observer, or vice versa.
Claims (20)
1. a system, comprising:
Automatic change-over, it is configured to optionally be sent to load by power from the first power supply or second source, and described automatic change-over comprises:
Switch, it can move between the first position and the second position and be configured to axle is rotated;
First holding electrical contact; With
First contact bearing assembly, it comprises:
First contact supporting, it is connected on the first movable electrical contact, wherein, described first movable electrical contact is configured to be connected to when described switch is in primary importance on described first holding electrical contact, thus is sent to described load by power from described first power supply;
First pin, its hole through described first contact supporting extends; With
First connecting rod, it is connected on described axle and described first pin, and be configured to make described first contact supporting be rotated around the rotation parallel with described axle, thus described first movable electrical contact is optionally made to connect with described first holding electrical contact or disconnect.
2. system according to claim 1, is characterized in that, described first pin comprises groove, and it is configured to engage with the first connecting rod plug-in unit of described first connecting rod, and is configured to limit the axial motion of described pin in described first contact supporting.
3. system according to claim 2, is characterized in that, described first connecting rod is arranged in notch, and described notch forms on the end face of described first contact supporting, and extends through the hole of described first contact supporting.
4. system according to claim 2, is characterized in that, described connecting rod plug-in unit comprises U-shaped.
5. system according to claim 1, is characterized in that, comprises the first arc chute shell, and it is configured to roughly close described first movable electrical contact and described first holding electrical contact when described switch is in described primary importance.
6. system according to claim 5, it is characterized in that, described first arc chute shell comprises outer surface of outer cover, its be configured to described first contact supporting around described rotation rotary motion during the outermost outer surface of adjacent described first contact supporting continuously.
7. system according to claim 6, is characterized in that, the outermost outer surface of described outer surface of outer cover and described first contact supporting is arc.
8. system according to claim 7, is characterized in that, described outer surface of outer cover is recessed, and described outermost outer surface is protruding.
9. system according to claim 5, is characterized in that, described first arc chute shell comprises multiple blade, extends between its first inwall at described first arc chute shell and second inwall.
10. a system, comprising:
Automatic change-over, it is configured to optionally be sent to load by power from the first power supply or second source, and described automatic change-over comprises:
Switch, it is configured to move between the first position and the second position;
First group of electrical contact, it to be configured to when described switch is in described primary importance delivering power from described first power supply;
Second group of electrical contact, it to be configured to when described switch is in the described second place delivering power from described second source;
First arc chute shell, it is configured to roughly close described first group of electrical contact when described switch is in described primary importance.
11. systems according to claim 10, is characterized in that, described first arc chute shell comprises multiple blade, extend between its first inwall at described first arc chute shell and second inwall.
12. systems according to claim 11, is characterized in that, described multiple blade comprises at least two blades with different orientation.
13. systems according to claim 10, is characterized in that, described switch structure rotates for making axle, and wherein, described automatic change-over comprises:
First contact bearing assembly, it comprises:
First contact supporting, it is connected on the first movable electrical contact of described first group of electrical contact, wherein, described first movable electrical contact is configured to be connected to when described switch is in described primary importance on the first holding electrical contact of described first group of electrical contact;
First pin, its hole through described first contact supporting extends; With
First connecting rod, it is connected on described axle and described first pin, and be configured to make described first contact supporting be rotated around the rotation parallel with described axle, thus described first movable electrical contact is optionally made to connect with described first holding electrical contact or disconnect.
14. systems according to claim 13, it is characterized in that, described first arc chute shell comprises outer surface of outer cover, its be configured to described first contact supporting around described rotation rotary motion during the outermost outer surface of adjacent described first contact supporting continuously.
15. systems according to claim 14, is characterized in that, described outer surface of outer cover is recessed, and described contact outer surface is protruding.
16. systems according to claim 13, is characterized in that, described outer surface of outer cover comprises at least one wide arm, its be configured to described first contact supporting around described rotation rotary motion during the sidewall of adjacent described contact outer surface continuously.
17. 1 kinds of systems, comprising:
Automatic change-over, it is configured to optionally be sent to load by power from the first power supply or second source, and described automatic change-over comprises:
Switch, it is configured to the first axle and the second axle are rotated between corresponding primary importance and the second place;
First holding electrical contact and the first movable electrical contact, it is configured to be coupled to each other when described first axle is in described primary importance, and from described first power supply delivering power;
Second holding electrical contact and the second movable electrical contact, it is configured to be coupled to each other when described second axle is in the described second place, and from described second source delivering power;
First contact bearing assembly, it comprises:
First contact supporting, it is connected on described first movable electrical contact;
First pin, it passes hole of described first contact supporting and extends; With
First connecting rod, it is connected on described first axle and described first pin, and be configured to make described first contact supporting be rotated around the first rotation parallel with described first axle, thus described first movable electrical contact is optionally made to connect with described first holding electrical contact or disconnect; With
First arc chute shell, it is configured to roughly close described first movable electrical contact and described first holding electrical contact when described first axle is in described primary importance.
18. systems according to claim 17, is characterized in that, described first arc chute shell comprises multiple blade, extend between its first inwall at described first arc chute shell and second inwall.
19. systems according to claim 17, it is characterized in that, described first arc chute shell comprises outer surface of outer cover, its be configured to described first contact supporting around described first rotation rotary motion during the outermost outer surface of adjacent described first contact supporting continuously.
20. systems according to claim 17, is characterized in that, described first pin comprises groove, and it is configured to the first connecting rod plug-in unit receiving described first connecting rod, and limit the axial motion of described pin in the hole of described first contact supporting.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/071942 WO2014131163A1 (en) | 2013-02-27 | 2013-02-27 | Electrical transfer switch system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104350560A true CN104350560A (en) | 2015-02-11 |
| CN104350560B CN104350560B (en) | 2017-09-15 |
Family
ID=51427464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380002848.1A Expired - Fee Related CN104350560B (en) | 2013-02-27 | 2013-02-27 | Electric switching system |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9368295B2 (en) |
| CN (1) | CN104350560B (en) |
| WO (1) | WO2014131163A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3365905B1 (en) * | 2015-10-23 | 2021-03-10 | Cummins Power Generation IP, Inc. | Low profile blow-on force automatic switch |
| CN108352265B (en) * | 2015-10-23 | 2019-10-29 | 康明斯发电Ip公司 | Equilibrant force air blowing type contacts automatic change-over |
| EP3457423B1 (en) * | 2017-09-15 | 2021-12-22 | ABB Schweiz AG | Change-over switch |
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- 2013-02-27 WO PCT/CN2013/071942 patent/WO2014131163A1/en active Application Filing
- 2013-02-27 US US14/241,451 patent/US9368295B2/en not_active Expired - Fee Related
- 2013-02-27 CN CN201380002848.1A patent/CN104350560B/en not_active Expired - Fee Related
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| CN2353027Y (en) * | 1998-09-28 | 1999-12-08 | 江苏泰航电器有限公司 | Lockable type electromagnetic, automatic and double power supply switch |
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Also Published As
| Publication number | Publication date |
|---|---|
| US9368295B2 (en) | 2016-06-14 |
| CN104350560B (en) | 2017-09-15 |
| US20150371792A1 (en) | 2015-12-24 |
| WO2014131163A1 (en) | 2014-09-04 |
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